What is the working principle of Mini Diode Laser 808 nm Hair Removal Machine ?808nm Laser hair removal is the "gold standard" technology for unwanted/excessive hair removal. Clinically proven, laser technology for permanent hair reduction has yet to achieve good safety and efficacy. The laser energy heats up hair follicles to a sufficient temperature for hair removal. At the same time, it delivers a minimal amount of thermal energy to the epidermis.